<template>
    <div>
        <!-- 商品列表页面 -->
       <div class="goods-list">
           <router-link tag="div" :to="'/home/goodsinfo/'+item.id" class="goods-item" v-for="item in goodslist" :key="item.id">
               <img :src="item.img_url" alt="">
               <h1 class="title">{{item.title}}</h1>
               <div class="info">
                   <p class="price">
                       <span class="new">￥{{item.sell_price}}</span>
                       <span class="old">￥{{item.market_price}}</span>
                   </p>
                   <p class="sell">
                       <span>热卖中</span>
                       <span>剩{{item.stock_quantity}}件</span>
                   </p>
               </div>
           </router-link>

           <mt-button type="danger" size="large" style="margin-top:10px"
            @click="getMore">加载更多</mt-button>
       </div>

    </div>
</template>

<script>
export default {
    data() {
        return{
            page:1,//默认展示第一页的数据
            goodslist:[],//商品列表
            isloaded:false//节流阀，默认为flase表示还没加载完毕
        }
    },
    created(){
        this.getGoodsListByPage();
    },
    methods:{
       async getGoodsListByPage(){
            //根据页码获取商品列表
            const {data} = await this.$http.get('/api/getgoods?pageindex='+this.page)
            if(data.status === 0){
                //当获取到的数组长度为0，则表示数据已经加载完毕了
                if(data.message.length<=0){
                    //设置isloaded 为true表示没有新数据了
                    this.isloaded=true;
                }
                this.goodslist=this.goodslist.concat(data.message);
            }
        },
        getMore(){
            //如果为true表示数据已经加载完毕了，此时直接return
          if(this.isloaded==true){
                return;
            }
          
            //点击加载更多的商品
            this.page++;
            this.getGoodsListByPage();
        }
    }
}
</script> 

<style lang="scss" scoped>
    .goods-list{
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        padding: 7px;
        padding-top: 0px;
        .goods-item{
            width: 49%;
            border: 1px solid #ccc;
            margin-top: 7px;
            box-shadow: 0 0 7px #ccc ;
            padding: 2px;
            display: flex;
            flex-direction: column;//将主轴弄成纵向的
            justify-content: space-between;
            img{
                width: 100%;
                min-height: 170px;
            }
            .title{
                font-size: 14px;
            }
            .info{
                background-color: #eee;
                overflow: hidden;
                p{
                    margin: 3px;
                }
                .price{
                    .new{
                        color: red;
                        font-size: 16px;
                        font-weight: bold;
                        margin-right: 10px;
                    }
                    .old{
                        font-size: 12px;
                        text-decoration: line-through;
                    }
                }
                .sell{
                    display: flex;
                    justify-content: space-between;
                    font-size: 12px;
                }
            }
        }
    }
</style>